There are 27 million small businesses. Small businesses create about two out of every three jobs in the U.S. each year. Approximately half of employed Americans either own, or work for, a small business.
You can check out more at the White House website:
You can also learn more about some of the tools available to small business owners (and those thinking of starting a business) with options available such as free and low-cost counseling to entrepreneurs.
Another useful website is www.SBA.gov (U.S. Small Business Administration).